COLUMBIA, Maryland (AP) – Police say one person is dead and a second person in critical condition after apparently overdosing during a Howard County concert. Police say 20 people were taken to the hospital, many for drug-related reasons.

Police say 20-year-old Tyler Fox Viscardi of Raleigh, North Carolina was taken to the hospital Friday around 9 p.m. from the Mad Decent Block Party at the Merriweather Post Pavilion in Columbia.

Police say he was later pronounced dead. A 17-year-old from Woodbridge, Virginia is in critical condition. Police say it doesn’t appear the men knew each other.

It was not clear what drugs they had taken.

Police also issued 50 citations for underage drinking during the event. Officers also made three arrests, two for assault and a third for possession with intent to distribute marijuana.